The first term runs through the whole of October without a scheduled break, though many private schools take a short half-term pause of a few days towards the end of it. The next fixed point on the academic calendar is the winter holiday in December, so October 2029 sits squarely in the middle of the longest term of the three.
Leave in October 2029 competes with nothing on the public calendar and buys weather that improves week by week. The visitor season has not started in earnest, the schools are mid-term, and a week taken in the second half of the month delivers most of what the same week in December would.
October 2029 closes with the outdoor season fully open and the clocks in Europe already back. November follows with the most reliable weather of the year, Flag Day on the 3rd, and the run-up to the national holiday at the start of December.